Custom saddle

Tynan not sure how I'd start this but, yep, that's what I'm talking
Any suggestion how I turn your inspirational string of words into real copper letters, please? Ta!

You need to do an evening of Googlizing.

I think the search terms might be "custom brass copper embossed plates tags labels"

http://www.brassname.com/Decorative-plates-brass-custom-3.html

Rivet guns you can get from anywhere, quite cheap.

Maybe think about adapting something more readily available, like custom made dog tags or metal / enamel badges, there are loads of companies who are set up to make custom die cast metal badges:

Maybe get a dies struck lapel pin (no colour) in a soft metal like a brass or copper ?

http://www.hortonengraving.co.uk/enamel_badges.htm